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NETSTAT Question

 
 
ib_redbeard
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      07-23-2007, 07:34 PM
Hi,
When I use netstat from a local user computer (Windows XP) to look for SMTP
connections to my email server, it says the following:

TCP LocalComputer:3599 192.168.100.1:smtp ESTABLISHED

Does that mean that the local computer is sending SMTP requests on port
3599? I thought that SMTP was sent on port 25 or are they only received on
Port 25 and can be sent from any port?

Thanks in advance!
 
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Phillip Windell
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      07-23-2007, 08:08 PM
The Destiantion Port is 25
The Source Port (aka Client Port) is a random number usually between
2500-5000.

--
Phillip Windell
www.wandtv.com

The views expressed, are my own and not those of my employer, or Microsoft,
or anyone else associated with me, including my cats.
-----------------------------------------------------


"ib_redbeard" <(E-Mail Removed)> wrote in message
news:5DFF9543-3D29-4FE1-9B0C-(E-Mail Removed)...
> Hi,
> When I use netstat from a local user computer (Windows XP) to look for
> SMTP
> connections to my email server, it says the following:
>
> TCP LocalComputer:3599 192.168.100.1:smtp ESTABLISHED
>
> Does that mean that the local computer is sending SMTP requests on port
> 3599? I thought that SMTP was sent on port 25 or are they only received
> on
> Port 25 and can be sent from any port?
>
> Thanks in advance!



 
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